The material is first feed into the feeder by the loader, and then evenly sent to the belt conveyor by the feeder, and then into the dryer through the material guide tube. The heat generated by the combustion of fuel in the hot blast stove enters the main cylinder under the action of the extraction fan to touch with the material. The material is evenly dispersed and fully touched with the hot air under the lifting plate in the drying drum. Speed up the material drying heat transfer, mass transfer, evaporation of water. The tumble dryer produced by our company is a three-return sealed structure, which can well reduce heat loss and improve thermal efficiency. The dried material is discharged through the discharge hopper and transported to the designated place for storage. The upper part of the discharge hopper is the dust in the discharge process. After being treated by the dust removal system, it can achieve the purpose of environmental protection.